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4. Thermodynamic performance
4.1 Filling and exhaust
The fourth key parameter in this article is thermodynamic performance. In general, cylinder filling is highly dependent on the local pressure in the air intake manifold during the intake phase. This pressure is a function of the spatial distance between two consecutive combustions in the same intake manifold, i.e. the firing order and the V-angle. Depending on crankshaft topology, thermodynamic performance can be significantly impacted. In order to guarantee the highest possible and most homogeneous air filling between all cylinders, multiple indicators will be presented in this section using the 16-cylinder V configuration as an example, without calling upon detailed calculations of pressure wave propagation or valve opening duration, the aim being to introduce...
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Thermodynamic performance
Axial crankshaft dynamics
Bibliography
Events
Aachen Colloquium on Automobile and Engine Technology http://www.aachener-kolloquium.de/en/
Torsional Vibration Symposium http://torsional-vibration-symposium.com/
Patents
Patent 1 – Combined Axial- and Torsional- vibration damper, Lutz Janner, EP1288527 B8, 24 August 2001.
Patent 2 – V16 Crankstar and firing sequences, Béchir Mokdad, German Patent Office, 10 2017 000778.0.
Patent 3 – V-type 4-stroke internal combustion engine with 20 cylinders, Béchir Mokdad, Christoph Henninger, German Patent Office, 10 2017 000747.0.
Standards and norms
- ISO Reciprocating internal combustion engine driven alternating current generating sets – Measurement and evaluation of mechanical vibration, first edition - ISO8528-9 - 1995
- ISO Mechanical vibration evaluation of machines vibration by measurements on non-rotating parts – Part 6: Reciprocating machines with power ratings above 100 kW - ISO10816-6 - 1995
- Reciprocating internal combustion engines – Designation...
Directory
MTZ Industrial Magazine. https://www.springerprofessional.de/en/mtz-industrial/6117828
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